Assuming the reaction goes to completion, what is the theoretical yield, in grams, of benzoic acid (in grams) when using 2.14 grams of sodium benzoate

            1.81 g of Benzoic Acid

Solution:

The balance chemical equation is as follow,

                     C₇H₅O₂Na  +  HCl     →      C₇H₆O₂  +  NaCl

According to equation,

          144.11 g (1 mole) C₇H₅O₂Na produces  =  122.12 g of C₇H₆O₂
So,
                    2.14 g of C₇H₅O₂Na will produce  =  X g of C₇H₆O₂

Solving for X,
                      X  =  (2.14 g × 122.12 g) ÷ 144.11 g

                      X  =  1.81 g of C₇H₆O₂